using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class Login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        lblInvalidUser.Visible = false;
    }
    protected void btnLogin_OnClick(object sender, EventArgs e)
    {
        string _username;
        string _password;

        if (Page.IsValid)
        {
            _username = txtUsername.Text;
            _password = txtPassword.Text;

            if (DAL.Instructor_Login(_username, _password))
            {
                Session["username"] = _username;
                Response.Redirect("Student.aspx?login=true");
            }
        }
    }
    protected void btnClear_OnClick(object sender, EventArgs e)
    {
        txtPassword.Text = String.Empty;
        txtUsername.Text = String.Empty;
    }
}
